Make DSA_SIG opaque.

This adds a new accessor function DSA_SIG_get0.
The customisation of DSA_SIG structure initialisation has been removed this
means that the 'r' and 's' components are automatically allocated when
DSA_SIG_new() is called. Update documentation.

Reviewed-by: Rich Salz <rsalz@openssl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/crypto/dsa/dsa_locl.h b/crypto/dsa/dsa_locl.h
index 6182495848..7767e74ef9 100644
--- a/crypto/dsa/dsa_locl.h
+++ b/crypto/dsa/dsa_locl.h
@@ -65,3 +65,8 @@ int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
                           size_t seed_len, int idx, unsigned char *seed_out,
                           int *counter_ret, unsigned long *h_ret,
                           BN_GENCB *cb);
+
+struct DSA_SIG_st {
+    BIGNUM *r;
+    BIGNUM *s;
+};